Comment 2Don't use this account, use tml@iki.fi
2011-05-20 00:21:51 UTC

The logical reason is that the "all" other applications to compare to presumably were written for MacOSX? Or at least have had more MacOSX porting love. I am sure that if you compare to comparable old cross-platform software you will find they too might look different, for instance use different fonts, than "all" other applications. And note that your screenshot doesn't even compare with a 3rd-party application, but with the OS (well, desktop environment) itself.
I am sorry, but I fail to see this would be a *bug*. It's an enhancement request. More MacOSX savvy developers needed. It is also a well known issue that LibreOffice (and OpenOffice.org) uses mostly the older Mac GUI toolkit, Carbon. Or something.

Mac OS X uses different font sizes to indicate hierarchy in its several UI elements. LibreOffice should at least use the standard font size and not that oversized one shown in the screenshot attached to this bug.